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    <h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="Outline.html">Outline</a></li><li><a href="Tag.html">Tag</a></li><li><a href="TagCanvas.html">TagCanvas</a></li></ul><h3>Modules</h3><ul><li><a href="module-$ui_components_my-affix.html">$ui/components/my-affix</a></li><li><a href="module-$ui_components_my-anchor.html">$ui/components/my-anchor</a></li><li><a href="module-$ui_components_my-autocomplete.html">$ui/components/my-autocomplete</a></li><li><a href="module-$ui_components_my-avatar.html">$ui/components/my-avatar</a></li><li><a href="module-$ui_components_my-avatars.html">$ui/components/my-avatars</a></li><li><a href="module-$ui_components_my-back-top.html">$ui/components/my-back-top</a></li><li><a href="module-$ui_components_my-capture.html">$ui/components/my-capture</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-capture.html#~_renderImg">_renderImg</a></li></ul></li><li><a href="module-$ui_components_my-card-list.html">$ui/components/my-card-list</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-card-list.html#~refresh">refresh</a></li></ul></li><li><a href="module-$ui_components_my-cascader.html">$ui/components/my-cascader</a></li><li><a href="module-$ui_components_my-checkbox.html">$ui/components/my-checkbox</a></li><li><a href="module-$ui_components_my-clipboard.html">$ui/components/my-clipboard</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-clipboard.html#~copy">copy</a></li></ul></li><li><a href="module-$ui_components_my-color-picker.html">$ui/components/my-color-picker</a></li><li><a href="module-$ui_components_my-contextmenu.html">$ui/components/my-contextmenu</a></li><li><a href="module-$ui_components_my-corner-mark.html">$ui/components/my-corner-mark</a></li><li><a href="module-$ui_components_my-crud.html">$ui/components/my-crud</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-crud.html#~openAddDialog">openAddDialog</a></li><li data-type='method'><a href="module-$ui_components_my-crud.html#~refresh">refresh</a></li><li data-type='method'><a href="module-$ui_components_my-crud.html#~reload">reload</a></li></ul></li><li><a href="module-$ui_components_my-date.html">$ui/components/my-date</a></li><li><a href="module-$ui_components_my-date-picker.html">$ui/components/my-date-picker</a></li><li><a href="module-$ui_components_my-description.html">$ui/components/my-description</a></li><li><a href="module-$ui_components_my-detail.html">$ui/components/my-detail</a></li><li><a href="module-$ui_components_my-detail-item.html">$ui/components/my-detail-item</a></li><li><a href="module-$ui_components_my-dialog.html">$ui/components/my-dialog</a></li><li><a href="module-$ui_components_my-drag.html">$ui/components/my-drag</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-drag.html#~getRelativeEl">getRelativeEl</a></li></ul></li><li><a href="module-$ui_components_my-drop.html">$ui/components/my-drop</a></li><li><a href="module-$ui_components_my-edit-tags.html">$ui/components/my-edit-tags</a></li><li><a href="module-$ui_components_my-editor.html">$ui/components/my-editor</a></li><li><a href="module-$ui_components_my-empty.html">$ui/components/my-empty</a></li><li><a href="module-$ui_components_my-filter.html">$ui/components/my-filter</a></li><li><a href="module-$ui_components_my-fixed.html">$ui/components/my-fixed</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-fixed.html#~resize">resize</a></li></ul></li><li><a href="module-$ui_components_my-flex.html">$ui/components/my-flex</a></li><li><a href="module-$ui_components_my-flex-item.html">$ui/components/my-flex-item</a></li><li><a href="module-$ui_components_my-flip.html">$ui/components/my-flip</a></li><li><a href="module-$ui_components_my-float.html">$ui/components/my-float</a></li><li><a href="module-$ui_components_my-float-item.html">$ui/components/my-float-item</a></li><li><a href="module-$ui_components_my-form.html">$ui/components/my-form</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-form.html#~reset">reset</a></li><li data-type='method'><a href="module-$ui_components_my-form.html#~submit">submit</a></li></ul></li><li><a href="module-$ui_components_my-form_src_Base.html">$ui/components/my-form/src/Base</a></li><li><a href="module-$ui_components_my-form_src_common_TagInput.html">$ui/components/my-form/src/common/TagInput</a></li><li><a href="module-$ui_components_my-form_src_common_TagSelect.html">$ui/components/my-form/src/common/TagSelect</a></li><li><a href="module-$ui_components_my-form_src_common_TreeSelect.html">$ui/components/my-form/src/common/TreeSelect</a></li><li><a href="module-$ui_components_my-header.html">$ui/components/my-header</a></li><li><a href="module-$ui_components_my-highlight.html">$ui/components/my-highlight</a></li><li><a href="module-$ui_components_my-icon.html">$ui/components/my-icon</a></li><li><a href="module-$ui_components_my-im-wall.html">$ui/components/my-im-wall</a></li><li><a href="module-$ui_components_my-input.html">$ui/components/my-input</a></li><li><a href="module-$ui_components_my-input-number.html">$ui/components/my-input-number</a></li><li><a href="module-$ui_components_my-layout.html">$ui/components/my-layout</a></li><li><a href="module-$ui_components_my-lazy.html">$ui/components/my-lazy</a></li><li><a href="module-$ui_components_my-list.html">$ui/components/my-list</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-list.html#~load">load</a></li><li data-type='method'><a href="module-$ui_components_my-list.html#~refresh">refresh</a></li><li data-type='method'><a href="module-$ui_components_my-list.html#~reset">reset</a></li><li data-type='method'><a href="module-$ui_components_my-list.html#~scrollTop">scrollTop</a></li></ul></li><li><a href="module-$ui_components_my-location-picker.html">$ui/components/my-location-picker</a></li><li><a href="module-$ui_components_my-login.html">$ui/components/my-login</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-login.html#~submit">submit</a></li></ul></li><li><a href="module-$ui_components_my-marquee.html">$ui/components/my-marquee</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-marquee.html#~pause">pause</a></li><li data-type='method'><a href="module-$ui_components_my-marquee.html#~start">start</a></li><li data-type='method'><a href="module-$ui_components_my-marquee.html#~stop">stop</a></li></ul></li><li><a href="module-$ui_components_my-master-app.html">$ui/components/my-master-app</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-master-app.html#~initState">initState</a></li><li data-type='method'><a href="module-$ui_components_my-master-app.html#~onStateChange">onStateChange</a></li><li data-type='method'><a href="module-$ui_components_my-master-app.html#~onStateChange">onStateChange</a></li><li data-type='method'><a href="module-$ui_components_my-master-app.html#~setState">setState</a></li></ul></li><li><a href="module-$ui_components_my-menu.html">$ui/components/my-menu</a></li><li><a href="module-$ui_components_my-micro-app.html">$ui/components/my-micro-app</a></li><li><a href="module-$ui_components_my-navbar.html">$ui/components/my-navbar</a></li><li><a href="module-$ui_components_my-navbar-FullScreenAction.html">$ui/components/my-navbar-FullScreenAction</a></li><li><a href="module-$ui_components_my-navbar-IconAction.html">$ui/components/my-navbar-IconAction</a></li><li><a href="module-$ui_components_my-navbar-UserAction.html">$ui/components/my-navbar-UserAction</a></li><li><a href="module-$ui_components_my-number.html">$ui/components/my-number</a></li><li><a href="module-$ui_components_my-panel.html">$ui/components/my-panel</a></li><li><a href="module-$ui_components_my-paragraph.html">$ui/components/my-paragraph</a></li><li><a href="module-$ui_components_my-pro.html">$ui/components/my-pro</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-pro.html#~addTab">addTab</a></li><li data-type='method'><a href="module-$ui_components_my-pro.html#~closeTabs">closeTabs</a></li><li data-type='method'><a href="module-$ui_components_my-pro.html#~setTab">setTab</a></li></ul></li><li><a href="module-$ui_components_my-promise.html">$ui/components/my-promise</a></li><li><a href="module-$ui_components_my-radial-menu.html">$ui/components/my-radial-menu</a></li><li><a href="module-$ui_components_my-radio.html">$ui/components/my-radio</a></li><li><a href="module-$ui_components_my-range.html">$ui/components/my-range</a></li><li><a href="module-$ui_components_my-rate.html">$ui/components/my-rate</a></li><li><a href="module-$ui_components_my-resize.html">$ui/components/my-resize</a></li><li><a href="module-$ui_components_my-result.html">$ui/components/my-result</a></li><li><a href="module-$ui_components_my-revolve.html">$ui/components/my-revolve</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-revolve.html#~next">next</a></li><li data-type='method'><a href="module-$ui_components_my-revolve.html#~prev">prev</a></li><li data-type='method'><a href="module-$ui_components_my-revolve.html#~start">start</a></li><li data-type='method'><a href="module-$ui_components_my-revolve.html#~stop">stop</a></li></ul></li><li><a href="module-$ui_components_my-search-box.html">$ui/components/my-search-box</a></li><li><a href="module-$ui_components_my-select.html">$ui/components/my-select</a></li><li><a href="module-$ui_components_my-sidebar.html">$ui/components/my-sidebar</a></li><li><a href="module-$ui_components_my-skeleton.html">$ui/components/my-skeleton</a></li><li><a href="module-$ui_components_my-slider.html">$ui/components/my-slider</a></li><li><a href="module-$ui_components_my-sortable.html">$ui/components/my-sortable</a></li><li><a href="module-$ui_components_my-spin.html">$ui/components/my-spin</a></li><li><a href="module-$ui_components_my-stat-card.html">$ui/components/my-stat-card</a></li><li><a href="module-$ui_components_my-switch.html">$ui/components/my-switch</a></li><li><a href="module-$ui_components_my-table.html">$ui/components/my-table</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-table.html#~refresh">refresh</a></li></ul></li><li><a href="module-$ui_components_my-tabs.html">$ui/components/my-tabs</a></li><li><a href="module-$ui_components_my-tag-canvas.html">$ui/components/my-tag-canvas</a></li><li><a href="module-$ui_components_my-tag-input.html">$ui/components/my-tag-input</a></li><li><a href="module-$ui_components_my-tag-select.html">$ui/components/my-tag-select</a></li><li><a href="module-$ui_components_my-text.html">$ui/components/my-text</a></li><li><a href="module-$ui_components_my-timer.html">$ui/components/my-timer</a><ul class='methods'><li data-type='method'><a href="module-$ui_components_my-timer.html#~reset">reset</a></li><li data-type='method'><a href="module-$ui_components_my-timer.html#~start">start</a></li><li data-type='method'><a href="module-$ui_components_my-timer.html#~stop">stop</a></li></ul></li><li><a href="module-$ui_components_my-title.html">$ui/components/my-title</a></li><li><a href="module-$ui_components_my-tree-select.html">$ui/components/my-tree-select</a></li><li><a href="module-$ui_components_my-typography.html">$ui/components/my-typography</a></li><li><a href="module-$ui_components_my-water-fall.html">$ui/components/my-water-fall</a></li><li><a href="module-$ui_components_my-watermark.html">$ui/components/my-watermark</a></li><li><a href="module-$ui_components_my-wave.html">$ui/components/my-wave</a></li><li><a href="module-$ui_components_my-wrapper.html">$ui/components/my-wrapper</a></li><li><a href="module-widgets_my-print.html">widgets/my-print</a></li></ul><h3>Events</h3><ul><li><a href="module-$ui_components_my-stat-card.html#~event:action">action</a></li><li></li><li><a href="module-$ui_components_my-form_src_common_TagInput.html#~event:add">add</a></li><li><a href="module-$ui_components_my-wrapper.html#~event:back">back</a></li><li><a href="module-$ui_components_my-dialog.html#~event:cancel">cancel</a></li><li><a href="module-$ui_components_my-typography.html#~event:change">change</a></li><li></li><li></li><li></li><li></li><li></li><li></li><li></li><li></li><li></li><li></li><li></li><li></li><li></li><li><a href="module-$ui_components_my-radial-menu.html#~event:click">click</a></li><li></li><li></li><li></li><li></li><li></li><li></li><li><a href="module-$ui_components_my-avatars.html#~event:click-add">click-add</a></li><li><a href="module-$ui_components_my-avatars.html#~event:click-item">click-item</a></li><li><a href="module-$ui_components_my-avatars.html#~event:click-more">click-more</a></li><li><a href="module-$ui_components_my-radial-menu.html#~event:close">close</a></li><li></li><li><a href="module-$ui_components_my-pro.html#~event:collapse">collapse</a></li><li><a href="module-$ui_components_my-form_src_common_TagSelect.html#~event:collapsed">collapsed</a></li><li><a href="module-$ui_components_my-table.html#~event:column-change">column-change</a></li><li><a href="module-$ui_components_my-navbar-UserAction.html#~event:command">command</a></li><li></li><li></li><li><a href="global.html#event:complete">complete</a></li><li></li><li><a href="module-$ui_components_my-typography.html#event:copy">copy</a></li><li></li><li></li><li></li><li></li><li><a href="module-$ui_components_my-drag.html#~event:drag">drag</a></li><li></li><li><a href="module-$ui_components_my-dialog.html#~event:drag-start">drag-start</a></li><li><a href="module-$ui_components_my-dialog.html#~event:drag-stop">drag-stop</a></li><li><a href="module-$ui_components_my-drop.html#~event:drop">drop</a></li><li><a href="module-$ui_components_my-typography.html#event:edited">edited</a></li><li></li><li></li><li></li><li></li><li><a href="module-$ui_components_my-typography.html#event:editing">editing</a></li><li></li><li></li><li></li><li></li><li><a href="module-$ui_components_my-drop.html#~event:enter">enter</a></li><li><a href="module-$ui_components_my-table.html#~event:error">error</a></li><li></li><li></li><li></li><li></li><li><a href="module-$ui_components_my-typography.html#event:expand">expand</a></li><li></li><li></li><li></li><li></li><li><a href="module-$ui_components_my-timer.html#~event:finish">finish</a></li><li><a href="module-$ui_components_my-dialog.html#~event:hide">hide</a></li><li><a href="module-$ui_components_my-lazy.html#~event:init">init</a></li><li><a href="module-$ui_components_my-form_src_common_TagInput.html#~event:input-change">input-change</a></li><li><a href="module-$ui_components_my-drop.html#~event:leave">leave</a></li><li><a href="module-$ui_components_my-wrapper.html#~event:link-click">link-click</a></li><li><a href="module-$ui_components_my-dialog.html#~event:load">load</a></li><li><a href="module-$ui_components_my-revolve.html#~event:loaded">loaded</a></li><li><a href="module-$ui_components_my-dialog.html#~event:maximize">maximize</a></li><li><a href="module-$ui_components_my-im-wall.html#~event:on-added">on-added</a></li><li><a href="module-$ui_components_my-capture.html#~event:on-capture">on-capture</a></li><li><a href="global.html#event:on-change">on-change</a></li><li><a href="module-$ui_components_my-tag-canvas.html#~event:on-click">on-click</a></li><li><a href="module-$ui_components_my-capture.html#~event:on-output">on-output</a></li><li><a href="module-$ui_components_my-radial-menu.html#~event:open">open</a></li><li></li><li><a href="module-$ui_components_my-drop.html#~event:over">over</a></li><li><a href="global.html#~event:page-change">page-change</a></li><li></li><li></li><li><a href="module-$ui_components_my-login.html#~event:pki">pki</a></li><li><a href="module-$ui_components_my-revolve.html#~event:progress">progress</a></li><li><a href="module-$ui_components_my-form_src_common_TagInput.html#~event:remove">remove</a></li><li><a href="module-$ui_components_my-timer.html#~event:reset">reset</a></li><li></li><li><a href="module-$ui_components_my-resize.html#~event:resize">resize</a></li><li></li><li><a href="module-$ui_components_my-dialog.html#~event:resize-start">resize-start</a></li><li><a href="module-$ui_components_my-dialog.html#~event:resize-stop">resize-stop</a></li><li><a href="module-$ui_components_my-search-box.html#~event:search">search</a></li><li><a href="module-$ui_components_my-sidebar.html#~event:select">select</a></li><li></li><li></li><li></li><li><a href="module-$ui_components_my-dialog.html#~event:show">show</a></li><li><a href="global.html#~event:size-change">size-change</a></li><li></li><li></li><li><a href="module-$ui_components_my-timer.html#~event:start">start</a></li><li></li><li></li><li></li><li><a href="module-$ui_components_my-timer.html#~event:stop">stop</a></li><li></li><li></li><li></li><li><a href="module-$ui_components_my-login.html#~event:submit">submit</a></li><li></li><li></li><li><a href="module-$ui_components_my-table.html#~event:success">success</a></li><li></li><li></li><li></li><li></li><li></li><li><a href="module-$ui_components_my-panel.html#~event:tab-change">tab-change</a></li><li><a href="module-$ui_components_my-pro.html#~event:tab-remove">tab-remove</a></li><li><a href="module-$ui_components_my-pro.html#~event:tab-select">tab-select</a></li><li><a href="module-$ui_components_my-timer.html#~event:tick">tick</a></li><li><a href="module-$ui_components_my-form.html#~event:validate">validate</a></li><li><a href="module-widgets_my-back-top.html#event:click">click</a></li></ul><h3>Global</h3><ul><li><a href="global.html#AddShadowToImage">AddShadowToImage</a></li><li><a href="global.html#appendChildNode">appendChildNode</a></li><li><a href="global.html#createEllipsisContainer">createEllipsisContainer</a></li><li><a href="global.html#createEllipsisContentHolder">createEllipsisContentHolder</a></li><li><a href="global.html#destroyVue">destroyVue</a></li><li><a href="global.html#getData">getData</a></li><li><a href="global.html#inRange">inRange</a></li><li><a href="global.html#instanceVue">instanceVue</a></li><li><a href="global.html#props">props</a></li><li><a href="global.html#pxToNumber">pxToNumber</a></li><li><a href="global.html#removeEllipsisContainer">removeEllipsisContainer</a></li><li><a href="global.html#RoundImage">RoundImage</a></li><li><a href="global.html#scrollTop">scrollTop</a></li><li><a href="global.html#setData">setData</a></li><li><a href="global.html#styleToString">styleToString</a></li><li><a href="global.html#wrapperDecorations">wrapperDecorations</a></li></ul>
</nav>

<div id="main">
    
    <h1 class="page-title">my-radial-menu/src/RadialMenu.vue</h1>
    

    



    
    <section>
        <article>
            <pre class="prettyprint source linenums"><code>&lt;template>
  &lt;transition name="my-radial-menu">
    &lt;div v-if="visible &amp;&amp; flashHelper"
         v-clickoutside="handleClickOutside"
         class="my-radial-menu"
         :style="styles">
      &lt;svg class="my-radial-menu__icons">
        &lt;symbol id="return" viewBox="0 0 489.394 489.394">
          &lt;path
            d="M375.789,92.867H166.864l17.507-42.795c3.724-9.132,1-19.574-6.691-25.744c-7.701-6.166-18.538-6.508-26.639-0.879L9.574,121.71c-6.197,4.304-9.795,11.457-9.563,18.995c0.231,7.533,4.261,14.446,10.71,18.359l147.925,89.823c8.417,5.108,19.18,4.093,26.481-2.499c7.312-6.591,9.427-17.312,5.219-26.202l-19.443-41.132h204.886c15.119,0,27.418,12.536,27.418,27.654v149.852c0,15.118-12.299,27.19-27.418,27.19h-226.74c-20.226,0-36.623,16.396-36.623,36.622v12.942c0,20.228,16.397,36.624,36.623,36.624h226.74c62.642,0,113.604-50.732,113.604-113.379V206.709C489.395,144.062,438.431,92.867,375.789,92.867z">&lt;/path>
        &lt;/symbol>
        &lt;symbol id="close" viewBox="0 0 41.756 41.756">
          &lt;path
            d="M27.948,20.878L40.291,8.536c1.953-1.953,1.953-5.119,0-7.071c-1.951-1.952-5.119-1.952-7.07,0L20.878,13.809L8.535,1.465c-1.951-1.952-5.119-1.952-7.07,0c-1.953,1.953-1.953,5.119,0,7.071l12.342,12.342L1.465,33.22c-1.953,1.953-1.953,5.119,0,7.071C2.44,41.268,3.721,41.755,5,41.755c1.278,0,2.56-0.487,3.535-1.464l12.343-12.342l12.343,12.343c0.976,0.977,2.256,1.464,3.535,1.464s2.56-0.487,3.535-1.464c1.953-1.953,1.953-5.119,0-7.071L27.948,20.878z">&lt;/path>
        &lt;/symbol>
      &lt;/svg>
      &lt;svg class="my-radial-menu__menu" viewBox="-50 -50 100 100" :width="size" :height="size">
        &lt;MenuItem v-for="item in menus"
                  v-bind="item"
                  :key="item.index"
                  :scale="scale"
                  :radius="radius"
                  :innerRadius="innerRadius"
                  @click="handleMenuClick">&lt;/MenuItem>

        &lt;g class="my-radial-menu__center" @click="handleCenterClick">
          &lt;circle :cx="centerCircle.cx" :cy="centerCircle.cy" :r="centerCircle.r">&lt;/circle>
          &lt;use :x="centerCircle.cx"
               :y="centerCircle.cy"
               :width="centerCircle.size"
               :height="centerCircle.size"
               :transform="centerCircle.transform"
               fill="white"
               :xlink:href="centerCircle.icon">&lt;/use>
        &lt;/g>
      &lt;/svg>
    &lt;/div>
  &lt;/transition>
&lt;/template>

&lt;script>
  /**
   * 圆形菜单组件
   * @module $ui/components/my-radial-menu
   */
  import MenuItem from './MenuItem'
  import {resolveLoopIndex, numberToString, setClassAndWaitForTransition} from './utils'
  import clickoutside from 'element-ui/lib/utils/clickoutside'

  export default {
    name: 'MyRadialMenu',
    components: {
      MenuItem
    },
    directives: {
      clickoutside
    },
    provide() {
      return {
        radialMenu: this
      }
    },
    /**
     * 属性参数
     * @member props
     * @property {number} [200] 菜单尺寸，直径
     * @property {Array} [items] 菜单数据项 [{id, label, icon, children}]
     * @property {boolean} [closeOnClick=true] 点击菜单后关闭
     * @property {boolean} [closeOnClickOutside=true] 点击菜单外部关闭
     * @property {number} [miniSectors=6] 最小菜单项数量
     * @property {string} [defaultSelected] 默认选中的菜单项id
     * @property {boolean} [resetOnClose=true] 关闭菜单后重置为初始状态
     * @property {number[]} [position] 菜单显示的坐标，圆心是参照点
     * @property {boolean} [visible=true] 显示菜单，支持 sync 修饰符
     * @property {number} [zIndex=1] 显示层级
     * @property {boolean} [appendToBody] 渲染 html 到 body
     */
    props: {
      size: {
        type: Number,
        default: 200
      },
      items: {
        type: Array,
        default() {
          return []
        }
      },
      closeOnClick: {
        type: Boolean,
        default: true
      },
      closeOnClickOutside: {
        type: Boolean,
        default: true
      },
      miniSectors: {
        type: Number,
        default: 6
      },
      defaultSelected: {
        type: [String, Number]
      },
      resetOnClose: {
        type: Boolean,
        default: true
      },
      position: {
        type: Array
      },
      visible: {
        type: Boolean,
        default: true
      },
      zIndex: {
        type: Number,
        default: 1
      },
      appendToBody: {
        type: Boolean
      }
    },
    data() {
      const radius = 50
      return {
        radius,
        innerRadius: radius * 0.3,
        sectorSpace: radius * 0.06,
        levelItems: [],
        parentMenus: [],
        nested: false,
        selected: null,
        flashHelper: true
      }
    },
    watch: {
      defaultSelected: {
        immediate: true,
        handler(val) {
          this.selected = this.defaultSelected
        }
      },
      items: {
        immediate: true,
        handler(val) {
          this.levelItems = val || []
        }
      },
      visible(val) {
        if (val) {
          /**
           * 显示时触发
           * @event open
           */
          this.$emit('open')
        } else {
          /**
           * 关闭时触发
           * @event close
           */
          this.$emit('close')
          if (this.resetOnClose) {
            this.reset()
          }
        }
      }
    },
    computed: {
      styles() {
        const radius = this.size / 2
        const [x, y] = this.position || [radius, radius]
        return {
          width: `${this.size}px`,
          height: `${this.size}px`,
          left: `${x - radius}px`,
          top: `${y - radius}px`,
          zIndex: this.zIndex
        }
      },
      sectorCount() {
        return Math.max(this.levelItems.length, this.miniSectors)
      },
      scale() {
        const totalSpace = this.sectorSpace * this.sectorCount;
        const circleLength = Math.PI * 2 * this.radius;
        const radiusDelta = this.radius - (circleLength - totalSpace) / (Math.PI * 2);
        return (this.radius - radiusDelta) / this.radius;
      },
      indexOffset() {
        const length = this.levelItems.length
        if (length &lt; this.sectorCount) {
          switch (length) {
            case 1:
              return -2;
            case 2:
              return -2;
            case 3:
              return -2;
            default:
              return -1;
          }
        } else {
          return -1;
        }
      },
      menus() {
        const angleStep = 360 / this.sectorCount
        const angleShift = angleStep / 2 + 270
        const length = this.levelItems.length
        const items = []
        for (let i = 0; i &lt; this.sectorCount; i++) {
          const startAngle = angleShift + angleStep * i;
          const endAngle = angleShift + angleStep * (i + 1);
          const index = resolveLoopIndex(this.sectorCount - i + this.indexOffset, this.sectorCount);
          const item = (index >= 0 &amp;&amp; index &lt; length) ? this.levelItems[index] : null
          items.push({
            startAngle,
            endAngle,
            selected: (item &amp;&amp; item.id === this.selected),
            index,
            item
          })
        }
        return items
      },
      centerCircle() {
        const size = 8
        return {
          cx: numberToString(0),
          cy: numberToString(0),
          r: this.innerRadius - this.sectorSpace / 3,
          size: 8,
          icon: this.nested ? '#return' : '#close',
          transform: `translate(-${numberToString(size / 2)},-${numberToString(size / 2)})`
        }
      }
    },
    methods: {
      handleCenterClick() {
        if (this.parentMenus.length > 0) {
          this.flashHelper = false
          this.$nextTick(() => {
            this.levelItems = this.parentMenus.pop()
            this.nested = this.parentMenus.length > 0
            this.flashHelper = true
          })
          this.outerEffect()
        } else {
          this.$emit('update:visible', false)
        }
      },
      outerEffect() {
        this.clean()
        this.cloneEl = this.$el.cloneNode(true)
        this.$el.parentNode.appendChild(this.cloneEl)
        this.timerId = setTimeout(() => {
          setClassAndWaitForTransition(this.cloneEl, 'my-radial-menu-outer').then(this.clean)
        }, 20)
      },
      handleMenuClick(item) {
        if (item.children) {
          this.flashHelper = false
          this.$nextTick(() => {
            this.parentMenus.push(this.levelItems.slice(0))
            this.levelItems = item.children
            this.nested = true
            this.flashHelper = true
          })
          this.outerEffect()
        } else {
          this.selected = item.id
          this.closeOnClick &amp;&amp; this.$emit('update:visible', false)
          /**
           * 点击菜单时触发
           * @event click
           * @param {object} item 菜单项对象
           */
          this.$emit('click', item)
        }
      },
      handleClickOutside() {
        this.closeOnClickOutside &amp;&amp; this.$emit('update:visible', false)
      },
      reset() {
        this.nested = false
        this.selected = this.defaultSelected
        this.levelItems = this.items
        this.parentMenus = []
      },
      clean() {
        this.timerId &amp;&amp; clearTimeout(this.timerId)
        if (this.cloneEl) {
          this.cloneEl.parentNode.removeChild(this.cloneEl)
        }
        this.timerId = null
        this.cloneEl = null
      }
    },
    mounted() {
      if (this.appendToBody) {
        document.body.appendChild(this.$el)
      }
    },
    beforeDestroy() {
      this.clean()
    }
  }
&lt;/script>
</code></pre>
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